Creed hayman mckendree



RIM.

Patented Dec. 14, 1920.

C. H. yIVICKENEBEE.

APPLICATION FILED FEB. 4| i920. 175362,430.

UNITEDl STATES CREED HAYMAN MCKENDREE, 0F LAKEVIEW, OREGON.

RIM.

Specification of Letters Patent.

Application tiled February 4, 1920. Seria1.No. 356,191.'l

To all whom itmag/ concern.'

Be it known that I, CREED H. MCKENDREE, a citizen of the United States,and ay resident of Lakeview, in the county of Lake and. State of Oregon,have invented a new and Improved Rim, of which the following is a full,clear, and exact description.

This invention relates to improvements in rims, and more particularly torims for supporting pneumatictires on wheel fellies, an object of theinvention being to provide a rim which is contracted by the expansion ofair in the tire when the latter' is infiated so as to cause the rim tofirmly grip the wheel.

A further object is to provide a rim of circular form having its endsslightly spaced apart to allow for expansion and contraction of the rim,said rim adapted to be contracted by the inflation of the tire, thepres-4 sure of air in the tire causing a contraction of the rim.

A further object is to provide a rim which can be conveniently connectedto or disconnected from a wheel so that it is readily demountable, androvide improved devices in connection with the rim for holding the sameexpanded to facilitate the removal and re la'cement of the rim.

RV ith these and other objects in view the invention consists in certainnovel features of construction, and combinations and ar! rangements ofparts, as will be more fully hereinafter described and pointed out inthe claim.

In the accompanying drawings Figure 1 is a view in transverse sectionthrough a tire, rim and wheel telly illustrating my invention;

Fig. 2 is a fragmentary view in side ele vation;

Fig. 3 is a fragmentary perspective view showing the adjacent ends ofthe rim and the .dotted line indicating the position of the bridgepiece; l

Fig. 4 is a fragmentary plan view showing the rim in expanded position;

Fig. 5 is a View in section on the line 5-5 of Figli;

F ig. 6 is a view in elevation of one of the a washer 15, and a crosspin 16 1s positioned wedge members;

Fig. 7 is an end View of Fig. 6;

Fig. 8 is a view in elevation of the other wedge member;

Fig. 9 is an end view of Fig. 8; i

Fig. l() illustrates the washer l5 in front elevation and edge` view;and

Fig. 11 is a perspective viewof one of the spacing plates 20.

1 represents a shoe and 2`an inner iniiated tube forming a pneumatic`tire of the ordinary type which is supported by my improved rim 3, thelatter positioned around the 'telly 4 of the wheel 5. The rim 3 is madewith comparatively strai ht -or slightly curved iianges 6 to inclose t einner portion ofthe shoe and these iianges arc preferably of the typeshown rather than the ordinary clencherrtype which would render itdiiiicult to remove the shoe as the rim is circular in form.

My improved rim 3, while comprising in Patented Dec. 1 4, 1926.

a mattei' of tact, constitute a complete an? nular ring, but is inreality a channel bent in circular form with the ends of the channelslightly apart, as shown clearly in Figs. 3 and 4f.

Vhen the rim is in use a bridge piece 7, is employed which conforms intransverse shape to the shape of the rim and bridges the gap between theends of the rim and is made with overlapping flanges 8 at its edgesprojecting over the flanges 6 of the rim. This bridge piece 7 is ofrelatively thin metal and provides a smooth bearing for the tire andprevents possibility of pinching the same between the ends of the rim.

t which illustrates in plan the adjacent ends of the rim, and it will benotedthat these ends are beveled or tapered from their transversecenters to their outer edges as indicated at 9 so that they receivewedge pieces 10 and 11 which fit the space between the ends of the rim.These wedge pieces 10 and 11 have ianges 12 at their outer endsconforming-in shape to the shape of the flanges 6 ofthe rin and they aremade in the'form of wedges longitudinally so that they can be readilyforced into position between the ends of the rim to expand the rim andallow the rim to be easilygremoved from the telly 4. The member 1() ismade'with a tongue 13 which is projected through a longitudinal bore -14of member 11 and through transversely through an openingll'? in theproper position between the ends of the Between the rim Band the felly 4acircuy positioned plates plates having open :tween their e. for thereception 3 other securing devices 19 to same to the telly 4, and saidanges 2l at their ends which the outer faces of the rim ,dental lateralmovement of w1; flanges ill are relatively the. expansion and contraciuiis ample to varythe diam- Hi' r ...a 1n order to remove the rim or tosecuieiy clamp the plates.

ln operation, the deflated tire is located around the rim andthe wedgepieces l and l located between the ends of the rim to hold the rim enaandeel, thus permitting the rin] to be readily positioned over thewheelelly and over the lianges 2l' of the plates 2). When the rim is inposition on the felly, the wedge pieces and 11 are removed, it beingunderstood, of course, that the bridge piece 7 is previously locatedacross the `rridjacent ends of the rim to'support the tirs. After thewedge pieces l() and l1 are removed, the tire is inflated and thisinflation of the tire due to the expansion thereof as a result of theair pressure Within the tire, causes the contraction of the rim 3 sothat it is drawn tightly around the felly and grips the plates 20,

iti)

described Without the flanges 21 atthe ends nof the plates preventinglpossibility of lateral displacement of the rim. When the rim is to beremoved, the tire is delated and the Wedge pieces l0 and l1 forced intoposition between the ends of the rim and secured by means of the Washerand pin 16 so .as to hold the rim suiiiciently expanded to permit itsconvenientA removal from the felly.

Various sllght changes lmay be made in the general form and arrangementof parts departing fromv the invention, and hence I do not limit myselfto the precise details set forth, but consider myself at liberty to makesuch changes and alterations as fairly fall Within lthe spirit.

and cope of the appended claim.

claim:

A- rim, comprising a channel of circular form having its ends spacedapart, said ends of the rim beveled or tapered from the center of therim to the outer edges, Wedge members itting the tapers of the ends andprojecting to the center of the rim, said wedge members operating toexpand the rim, one of said Wedge members having an opening therein, atongue on the other wedge member projecting through said opening, anddevices on the end of the tongue securing the Wedge members to ether.

CREED HAYMAN LGKENDREE.

